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- W2909133033 abstract "The effectiveness of drugs tends to vary between patients. One of the well-known reasons for this phenomenon is genetic polymorphisms in drug target genes among patients. Here, we propose that differences in expression levels of drug target genes across individuals can also contribute to this phenomenon.To explore this hypothesis, we analyzed the expression variability of protein-coding genes, and particularly drug target genes, across individuals. For this, we developed a novel variability measure, termed local coefficient of variation (LCV), which ranks the expression variability of each gene relative to genes with similar expression levels. Unlike commonly used methods, LCV neutralizes expression levels biases without imposing any distribution over the variation and is robust to data incompleteness. Application of LCV to RNA-sequencing profiles of 19 human tissues and to target genes of 1076 approved drugs revealed that drug target genes were significantly more variable than protein-coding genes. Analysis of 113 drugs with available effectiveness scores showed that drugs targeting highly variable genes tended to be less effective in the population. Furthermore, comparison of approved drugs to drugs that were withdrawn from the market showed that withdrawn drugs targeted significantly more variable genes than approved drugs. Last, upon analyzing gender differences we found that the variability of drug target genes was similar between men and women. Altogether, our results suggest that expression variability of drug target genes could contribute to the variable responsiveness and effectiveness of drugs, and is worth considering during drug treatment and development.LCV is available as a python script in GitHub (https://github.com/eyalsim/LCV).Supplementary data are available at Bioinformatics online." @default.
- W2909133033 created "2019-01-25" @default.
- W2909133033 creator A5015978922 @default.
- W2909133033 creator A5059198564 @default.
- W2909133033 creator A5084073125 @default.
- W2909133033 date "2019-01-14" @default.
- W2909133033 modified "2023-10-16" @default.
- W2909133033 title "Large-scale analysis of human gene expression variability associates highly variable drug targets with lower drug effectiveness and safety" @default.
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- W2909133033 doi "https://doi.org/10.1093/bioinformatics/btz023" @default.
- W2909133033 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6735839" @default.
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- W2909133033 hasPublicationYear "2019" @default.
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